#517CE4#517CE4

#517CE4 is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.8% C 0.165 H 265.0°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#517CE4
RGB	rgb(81, 124, 228)
HSL	hsl(222, 73%, 61%)
HSV	hsv(222, 64%, 89%)
CMYK	cmyk(64.5%, 45.6%, 0%, 10.6%)
CIE-LAB	lab(53.78, 17.88, -57.33)
CIE-LCH	lch(53.78, 60.06, 287.32°)
OKLab	oklab(60.77% -0.0143 -0.1639)
OKLCH	oklch(60.77% 0.165 265)
XYZ	xyz(24.5997, 21.7638, 76.2882)
Luminance	0.2177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517CE4 #E4B951

analogous

#51C5E4 #517CE4 #6F51E4

triadic

#517CE4 #E4517C #7CE451

tetradic

#517CE4 #E451C5 #E4B951 #51E46F

square

#517CE4 #E451C5 #E4B951 #51E46F

split-complementary

#517CE4 #E46F51 #C5E451

monochromatic

#1941A2 #2156D7 #517CE4 #86A4EC #BBCCF4

Accessibility & contrast

On white

3.92

#517CE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#517CE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517CE4

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517CE4	#FFFFFF	#000000	##000000
##517CE4	1.00	3.92	5.35	5.35
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4988E8

Deuteranopia (green-blind)

#2E7AE2

Tritanopia (blue-blind)

#0094A5

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #517ce4;
/* rgb */ color: rgb(81, 124, 228);
/* oklch */ color: oklch(60.8% 0.165 265.0);

Tailwind

colors: {
  custom: {
    50: '#90a1ed',
    500: '#517ce4',
    950: '#000000',
  },
}

SCSS

$custom: #517ce4;
$custom-light: #90a1ed;
$custom-dark: #000000;

JSON

{
  "hex": "#517ce4",
  "rgb": {
    "r": 81,
    "g": 124,
    "b": 228
  },
  "hsl": {
    "h": 222.449,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.6077,
    "c": 0.16457,
    "h": 265
  },
  "luminance": 0.21766
}

Semantic roles & 50–950 ramp

primary

#517CE4

secondary

#E4D4AC

accent

#9C10D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #517CE4

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →